What is CVE-2017-20002?

CVE-2017-20002 is a vulnerability in the Debian shadow package that allows users to login as password-less users even if they are connected by non-physical means.

What is the severity of CVE-2017-20002?

The severity of CVE-2017-20002 is high with a severity value of 7.8.

How does CVE-2017-20002 affect Debian shadow?

CVE-2017-20002 affects the Debian shadow package by incorrectly listing pts/0 and pts/1 as physical terminals in /etc/securetty, allowing local users to login without a password.

How can I fix CVE-2017-20002?

To fix CVE-2017-20002, update the Debian shadow package to version 1:4.5-1 or later.

Where can I find more information about CVE-2017-20002?

You can find more information about CVE-2017-20002 at the following references: [link1], [link2], [link3].

Vulnerability/
CVE-2017-20002

high

7.8

CWE

269

17/3/2021

5/8/2024

CVE-2017-20002

First published: Wed Mar 17 2021(Updated: )

The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Debian shadow	=4.4
Debian Debian Linux	=9.0

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is CVE-2017-20002?
CVE-2017-20002 is a vulnerability in the Debian shadow package that allows users to login as password-less users even if they are connected by non-physical means.
What is the severity of CVE-2017-20002?
The severity of CVE-2017-20002 is high with a severity value of 7.8.
How does CVE-2017-20002 affect Debian shadow?
CVE-2017-20002 affects the Debian shadow package by incorrectly listing pts/0 and pts/1 as physical terminals in /etc/securetty, allowing local users to login without a password.
How can I fix CVE-2017-20002?
To fix CVE-2017-20002, update the Debian shadow package to version 1:4.5-1 or later.
Where can I find more information about CVE-2017-20002?
You can find more information about CVE-2017-20002 at the following references: [link1], [link2], [link3].

collector/nvd-index
agent/severity
agent/references
agent/weakness
agent/author
agent/type
agent/event
agent/description
agent/last-modified-date
agent/softwarecombine
agent/first-publish-date
agent/tags
collector/mitre-cve
source/MITRE
vendor/debian
canonical/debian shadow
version/debian shadow/4.4
canonical/debian debian linux
version/debian debian linux/9.0

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.